Guide for straw-braid sewing machines



March 15, 1932. w MYERS GUIDE FOR STRAW'BRAID SEWING MACHINES Filed Jan.11, 1930- Patented Mar. 15, 1932 UNITED STATES PATENT OFFICE WALTERMYERS, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO THE SINGER MANUFAG TUBINGCOMPANY, OI ELIZABETH, NEW JERSEY, A CORPORATION OF NEW J' GUIDE FORSTRAW-BRAID SEWING MACHINES Application filed January 11, 1920. serialNo. 420,034.

This invention relates to improvements in worlcguides employed inconnection with straw-braid sewing machines and has for its object toprovide improved supporting means for the usual braid-dividing bladewhich rises edgewise from the work-support, whereby said blade may bereadily shifted into an unobstructive position for certain stitchingoperations.

v In a preferred embodiment of the invention, the straw-braid sewingmachine has a cylindrical work-supporting hornupon which is mounted theusual adjustable support having a swing-out edge-guide arm carrying apressure-finger. The braid-dividing blade included in the work-guidecombination, is in the present instance supported so as to be shiftableendwise into and out of operative position in an arc correspondingsubstantially with the curvature of the work-supporting horn. To thisend, the blade-supporting means comprises an angularblade-shankpivotally mounted upon the closed-end face of a cylindricalend-cap removably fit-ted upon the free end of the horn, thepivotal-axis of the blade-shan k coinciding substantially with thecenter of curvature of the cylindrical horn.

in the accompanying drawings, Fig. 1 is a fragmentary front elevation ofa straw-braid sewing machine fitted with a braidguide constituting apreferred embodiment of the invention. 2 is a fragmentary front endelevation of the machine. Fig. 3 is a perspecwork-cylinder and of thedivider-guide applied thereto.

Referring to the drawings, the machine frame includes a cylindricalwork-supporting horn 1 and a bracket-arm terminating in a head 2overhanging the work-support. Mounted for swinging movements in the head2 is a vibratory-frame 3, in which a needle-bar 4 carrying a needle 5 isjournaled for endwise reciprocation. The vibratoryframe is connected bymeans of a link 6 with suitable actuating mechanism (not shown) toimpart lateral movements across the line of feed to thereoiprocatory-needle while out of the work, whereby to effect theproduction tire view of the end-cap detached from the of zig-zagstitches with the aid of a complemental loop-taker (not shown) disposedin the work-supporting horn. Mounted for vertical movement in the head 2is a presserbar 7 to which is secured a suitable presserfoot 8yieldingly opposed to a feed-dog 9 having actuating mechanism supportedby Mounted upon the guide-bracket 10, by a pivot-screw 14, is theswing-out arm, 15 carrying at its free end the edge-guide 16 for thestraw-braid. J ournaled in a forward extention of the edge-guide 16 isthe shank-bar 17 of a presser-finger 18 urged by a spring 19 toyieldingly bear upon the entering strawbraid initially directed by thehooked bar 20 supported. by the guide-bracket 10.

Slidably fitted upon the free end of the work-supporting horn 1 is acylindrical endcap 21 of which the upper part is cut away throughout thelength of the cap to provide guide-edges as 22, engaging the oppositeends of an arched throat-plate 23 suitably secured upon the horn 1. 4The front side of the end-cap is further cut away, as at 24, to clearthe supporting block of the guide-bracket, 10.

Upon the closed-end face 25 vof the end-cap is a pivot-bolt 26 whichconstitutes a pivotal support, substantially in the center of curvatureof the end-cap for the shank 27 of a braid-dividing guide 28. The guide28 comprises a blade disposed edgewise with respect to the end-capcylindrical surface to rise therefrom in a vertical plane substantiallybisecting the path of lateral vibration of the needle 5. The shank 27extends laterally from the blade 28 and is of angular form, being bentabout the end-face defining edge 29 of the end-cap. In the preferredembodiment of the invention, the edges-.30 and 31 of the blade 28 arearcuate and conform sub,- stantially with the curvature of the end-cap,the lower edge 30 preferably entering a groove 82 in the throat-plate 23to guard against the braid creeping under the blade. Seating the bladein the throat-plate groove furthermore provides for the employment of avery thin blade, owing to the blade-steadying action of the throat-plategroove. Consequently, the adjacent braids may be guided to the needle inclosely abutted relationship. Preferably, also, the free end of theblade 28 enters a slot 83 in the toe of the 'presser-foot 8 toefiiectively guide the braid to the needle.

The blade-shank 27 has a laterally extending lip 34 for convenientlyshifting the blade manually into and out of operative position, themovement of the blade into operative position bein limited by a stop-pin35 upon the end-face 25 of the end-cap. A frictionwasher 86 upon thepivot-bolt 26 is employed to hold the blade in any position into whichit may be manually shifted.

The blade28, in its operative position, has the usual function ofguiding into abutted relation one edge of the previously sewed braid andan edge of the braid entering the machine. However, the presentblade-supporting means provides for conveniently withdrawing the bladeendwise from its operative position and for shifting it about itspivotal support 26 into an unobstructive po sition, when desired,without affecting the position of the guides carried by the guidebracket10.

Having thus set forth the nature of the invention, what I claim hereinis 1. In a straw-braid sewing machine, the combination withstitch-forming mechanism including a laterally vibrating needle, of abraid-dividing blace disposed in front of the needle in a vertical planesubstantially bisecting the path of vibration of said needle, andsupporting means providing for bodily shifting said dividing-bladeendwise into and out of operative position.

2. In a straw-braid sewing machine, a reciprocatory needle, awork-support presenting a curved wall in front of the needlepath, abraid-dividing blade rising from said curved work-support in front ofthe needle, and means for supporting said blade for movement into andout of operative position in an arc corresponding substantially with thecurvature of the work-support.

3. A straw-braid sewing machine having a cylindrical work-supportinghorn, stitchforming mechanism including a laterally vibrating needle, anedgewise-curved braid-dividing blade disposed in front of the needle ina vertical plane substantially bisecting the path of vibration of saidneedle, and means upon the work-supporting horn for support ing saidblade for movement endwise into and out of operative position in. an arccorresponding substantially with the curvature of the work-supportinghorn.

4. A straw-braid sewing machine having stitch-forming mechanismincluding a reciprocatory needle, a work-support comprising acylindrical horn, a braid-dividing blade rising from said horn in frontof the needle, and means for pivotally supporting said blade formovement endwise about a center corresponding substantially with thecenter of curvature of the cylindrical Work-supporting horn.

5. Asewing machine having stitch-forming mechanism including areciprocatory needle, a cylindrical Work-supporting horn, a work-guidingblade rising edgewise from said horn in front of the needle, and pivotalsupporting means for said blade upon the free end face of theWork-supporting horn.

6. A straw-braid sewing machine having stitch-forming mechanismincluding a reciprocatory needle, a cylindrical work- .ippoit ing hornhaving a removable cylindrical-cap upon the free end thereof providedwith a closed-end face, a braid-dividing blade disposed edgewise uponthe curved surface of said cap having an angular sup 'iorting-shankextending about the end-face defining edge of the end-cap, and pivotalsupporting means for said blade-shank upon the end-surface of the capsubstantially in the center of curvature of the end-cap.

7. A sewing'machine having stitch-forming mechanism including avertically reciprocatory needle, a work-support comprising ahorizontally-disposed cylindrical horn having a groove in its curvedwork-supporting surface in front of the needle extending in thedirection of seam formation. work-feeding means acting crosswise of thehorn, a work-guiding blade rising edgewise from said horn having itslower edge seated in said groove, and blade-supporting means providingfor shifting said guiding blade into and out of operative position.

In testimony whereof, I have signed my name to this specification.

WALTER MYERS.

